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7206457 |
Method and apparatus for encoding and decoding key value data of coordinate interpolator
A method and an apparatus for encoding/decoding key value data of a coordinate interpolator used in a three-dimensional graphic animation are provided. The apparatus for encoding key value data of...
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7203235 |
Architecture and method for fine granularity scalable video coding
A robust fine granularity scalability video encoding includes a base layer encoder and an enhancement layer encoder in which motion compensated difference images are generated by comparing an...
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7203236 |
Moving picture reproducing device and method of reproducing a moving picture
A moving picture reproducing device includes a compressed data buffer, a display size obtaining unit, a resolution selecting unit, four kinds of resolution decoding units, and a frame data buffer....
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7203371 |
Tarp filter
Systems and methods for performing adaptive filtering are disclosed. The present invention generates probabilities that can be used in an encoder, such as an arithmetic encoder and generates those...
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7200275 |
Skip macroblock coding
Various techniques and tools for encoding and decoding (e.g., in a video encoder/decoder) binary information (e.g., skipped macroblock information) are described. In some embodiments, the binary...
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7187803 |
Motion detecting device and search region variable-shaped motion detector
An overall motion detecting device ( 1 ) includes a search region variable-shaped motion detector ( 2 ) and an overall motion information generator ( 3 ). The overall motion information generator (...
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7184603 |
System and method for lossless compression of digital images
A method for improving lossless image compression by using multiple lossless image compression techniques and adapting the best one to each image. An RGB compressor receives an image file and...
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7181072 |
Intra compression of pixel blocks using predicted mean
An apparatus and method for encoding video frames is provided. The video frames are divided into blocks for encoding. Encoding of the video blocks utilizes motion detection, motion estimation and...
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7173971 |
Trailing artifact avoidance system and method
A system and method is provided to avoid or otherwise reduce luminance and/or chrominance trailing artifacts in block-based hybrid video coders using multiple block sizes and shapes. The proposed...
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7170941 |
Temporal compression
The present invention discloses a temporal compressor and decompressor for sequences of images. The compressor includes an interface for receiving the sequence of images. A spatial compressor...
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7167521 |
Video encoding apparatus and video decoding apparatus
An alpha-map encoding apparatus includes a first down-sampling circuit ( 21 ) for down-sampling an alpha-map signal which represents the shape of an object and the position in the frame of the...
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7167591 |
Image encoding method and image decoding method
The present invention provides an image coding method and an image decoding method by which an image can be restored correctly even if part of memory management information is lost by a...
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7164717 |
Systems and methods for detecting scene changes in a video data stream
The present invention is related to video encoding. In an embodiment, a first root mean squared (RMS) value is calculated for a first frame relative to a second frame, and a second frame relative...
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7161983 |
Adaptive motion vector field coding
A method for motion compensated encoding of video data. The method comprises the steps of:
generating a motion vector field of video pixels of a current frame to be coded based on a...
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7155057 |
Apparatus for and method of processing image and apparatus for and method of encoding image
An image of lower spatial resolution is converted into an image of higher spatial resolution efficiently and highly accurately. For such conversion, pixel data is expressed by vectors in a color...
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7149249 |
Color video codec method and system
In one aspect of a preferred embodiment, the present invention comprises a system for video compression comprising a video preprocessor; a predictor configured to receive video data from the...
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7149251 |
Apparatus, and associated method, for forming a compressed motion vector field utilizing predictive motion coding
Apparatus, and an associated method, motion compensates coding of video sequences. Motion compensated prediction is utilized in the representation of motion vector fields. Reduced numbers of bits...
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7149250 |
Video encoding method
The present invention relates to an encoding method processing video object planes (VOPs) of I, P or B type and including a dynamic allocation of said VOPs. According to said method, for each input...
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7145946 |
MPEG video drift reduction
A drift reduction method and apparatus. Drift reduction is effected in an MPEG video transcoder by decoding dropped out pixels to form a drift reference frame. The quantization indices in the...
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7146052 |
Image processing apparatus and surveillance camera system utilizing the same
A surveillance camera system includes a multiplexer. The multiplexer successively selects image data output from each surveillance camera one by one so as to input the selected image data to an...
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7139317 |
Segment-based encoding system using exposed area filling performed by an encoder and a decoder
An encoding system encodes and decodes video data using an exposed area fill processor. A nonkey frame is encoded as a set of kinetic information relating segments of a reference frame to the...
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7136533 |
Color image compression with adaptive prediction
Compression and reconstruction of a digital image are both performed by accessing a plurality of color caches corresponding to different chromatic contexts, selecting a color cache for a pixel...
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7130473 |
System and method for robust video coding using progressive fine-granularity scalable (PFGS) coding
A video encoding scheme employs progressive fine-granularity layered coding to encode video data frames into multiple layers, including a base layer of comparatively low quality video and multiple...
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7126989 |
Image coding method and image decoding method
A picture coding apparatus ( 300 ) is a picture coding apparatus that codes a difference between picture data (Img) representing an input picture and predictive picture data (Pred) representing a...
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7123654 |
Method and apparatus to encode a moving image with fixed computational complexity
An apparatus and method thereof to encode a moving image include a discrete cosine transform (DCT) unit performing a DCT process on input video data, a quantizer, and a motion estimation (ME) unit...
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7113644 |
Image coding apparatus and image coding method
An image coding apparatus includes a coding unit 100 for generating a code A, a coding unit 110 for generating a code B, an image reproduction unit 200, an image reproduction memory 204, ...
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7113646 |
Decoding of predicted AC coefficient without division
A technique for eliminating the division in decoding a predicted AC coefficient includes calculating and storing the values of I//AC_stepsize in a table. This allows one to convert a division into...
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7113543 |
Video encoding
Motion compensation as for video compression with motion estimation with either frame mode or field mode by initial prediction of motion mode and when prediction error is small enough truncate...
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7110452 |
Systems and methods for detecting scene changes in a video data stream
The present invention is related to video encoding. In an embodiment, a first root mean squared (RMS) value is calculated for a first frame relative to a second frame, and a second frame relative...
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7110450 |
Moving picture encoding apparatus
Deterioration of picture quality is prevented even in a transmission environment in which errors easily occur. A block significance determining section produces block significance for each block as...
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7106907 |
Adaptive error-resilient video encoding using multiple description motion compensation
A method estimates bit rates for sets of coding parameters, based on characteristics of a channel, and an end-to-end distortion is estimated based on signal statistics of the video. A particular...
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7106910 |
Color video coding scheme
Embodiments of a color video coding and decoding scheme are disclosed. In one embodiment, an efficient color coding scheme for color video using three dimensional (3-D) discrete wavelet transforms...
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7106366 |
Image capture system incorporating metadata to facilitate transcoding
A method for generating an enhanced compressed digital image, including the steps of: capturing a digital image; generating additional information relating to the importance of photographed subject...
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7099390 |
Prediction apparatus, encoding apparatus, inverse prediction apparatus, decoding apparatus, and computing apparatus
A candidate prediction block storage unit stores candidate prediction pixel data {“a” to “p”} (a four-by-four area) and neighboring pixel data {“A” to “D”}. A neighboring pixel...
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7099392 |
Motion vector searching method using plural search areas
A motion vector searching system and method estimates a motion vector during image compression by acquiring a present image frame and at least one previous image frame, generating low-resolution...
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7099511 |
Method and apparatus for coding and decoding image data using critical points
An image data coding and decoding technique which realizes most efficient compression of the image data. The image data are input and separated into key frames and other intermediate frames....
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7099515 |
Bitplane coding and decoding for AC prediction status information
In one aspect, an encoder/decoder selects a bitplane mode from a group of plural available bitplane modes, and processes a bitplane according to the selected bitplane mode, wherein the bitplane...
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7092576 |
Bitplane coding for macroblock field/frame coding type information
In one aspect, for a first interlaced video frame in a video sequence, a decoder decodes a bitplane signaled at frame layer for the first interlaced video frame. The bitplane represents field/frame...
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7092575 |
Moving image encoding apparatus and moving image encoding method
An encoding preprocessing part 1 extracts the amount of image feature relative to image data and passes the amount of image feature to a control part 2 as image feature amount information 11 ...
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7088868 |
Compression and decompression coding scheme and apparatus
In a compression and decompression coding method, arrangement and computer program product, a data signal containing a number of symbols is converted into a series of codewords. A set of codewords...
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7082164 |
Multimedia compression system with additive temporal layers
A multimedia compression system for generating frame rate scaleable data in the case of universally scaleable data. Universally scaleable data is scaleable across all of the relevant...
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7072492 |
Method and apparatus for digital watermarking
A method for embedding digital watermark data in digital data contents includes the steps of obtaining a frequency coefficient of block data of digital data contents, obtaining a complexity of the...
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7068850 |
Decoding of predicted DC coefficient without division
A technique for eliminating the division in decoding a predicted DC coefficient includes calculating and storing the values of 1//DC_scalar in a table. This allows one to convert a division into a...
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7068722 |
Content adaptive video processor using motion compensation
A system and method for providing a method for reducing artifacts in a video sequence of image frames is disclosed. The method and system include classifying scenes in the sequence of image frames,...
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7065139 |
Video encoding method and video encoder for improving performance
Video encoding methods and video encoders that provide improved performance while reducing power consumption. In one aspect, a video encoding method comprises the steps of outputting a parameter...
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7061980 |
Method of describing object region data, apparatus for generating object region data, video processing method, and video processing apparatus
An object-region-data describing method for describing object region data relating to a time-series variation of an object region in video data including a plurality of frames, the method...
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7062095 |
Entropic encoding method and device
A method of ordering bits in an N-bit status word (s[c]) adapted to represent the state of a coefficient (c) during an entropic encoding of the coefficient in several passes is adapted to modify...
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7058130 |
Scene change detection
In one embodiment, a scene change detection component of a video encoder uses motion vectors to determine whether a scene change occurs in a video sequence. The scene change detection component...
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7058231 |
Methods and apparatus for data compression with a hybrid context
A plurality of compression schemes are provided that achieve improved compression ratios. A first embodiment provides for compression of each pixel by one of a plurality of different entropy-based...
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7054366 |
Systems and methods for MPEG subsample decoding
A decoder decimates MPEG or other video data by subsampling the output of an inverse discrete cosine transform (IDCT) module. The decimation process is useful for reducing the volume of data that...
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